Affiliation:
1. School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics, Beijing 100083, PR China
2. School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics, Beijing 100083, PR China,
Abstract
The damage evolutions under low velocity impact were investigated using epoxy composite beams reinforced by S-2 glass, basalt, and Twaron 1000 fiber (identified as GFRP, BaFRP, and AFRP, respectively). GFRP showed a mutational damage mode, while BaFRP and AFRP represented a progressive one. The damage modes, the reductions in flexural strength and modulus in the direction of the impact face and the back face were compared based on the difference in fiber properties combined with fractography. The dominant factors for damage evolution were analyzed. There existed critical impact energy for initial damage, standing for the change in damage mode and dividing the post-impact flexural properties variation into two linear parts.
Subject
Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Cited by
29 articles.
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